142453739 has 2 divisors, whose sum is σ = 142453740. Its totient is φ = 142453738.

The previous prime is 142453691. The next prime is 142453763. The reversal of 142453739 is 937354241.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142453739 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (142453769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71226869 + 71226870.

It is an arithmetic number, because the mean of its divisors is an integer number (71226870).

Almost surely, 2^142453739 is an apocalyptic number.

142453739 is a deficient number, since it is larger than the sum of its proper divisors (1).

142453739 is an equidigital number, since it uses as much as digits as its factorization.

142453739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 38.

The square root of 142453739 is about 11935.3985689628. The cubic root of 142453739 is about 522.2654353373.

The spelling of 142453739 in words is "one hundred forty-two million, four hundred fifty-three thousand, seven hundred thirty-nine".